Defensive publication

ABSTRACT

PHOTOGRAPHIC SILVER HALIDE EMULSIONS ARE SPECTRALLY SENSITIZED WITH CHAIN RIGIDIZED DYES, SUCH AS THOSE HAVING ONE OF THE FOLLOWING FORMULAS:   TOGETHER WITH A NON-RIGIDIZED MEROCYANINE DYE, CONTAINING A 5-PYRAZOLONE NUCLEUS, SUCH AS A MEROCYANINE DYE OF THE FORMULA:   WHEREIN N REPRESENTS 2 OR 3; L REPRESENTS A METHINE LINKAGE; R REPRESENTS HYDROGEN OR LOWER ALKYL OR ARYL; R1, R2, R4 AND R5 EACH REPRESENTS ALKYL OR ARYL; R3 REPRESENTS HYDROGEN, LOWER ALKYL, ARYL OR, TAKEN TOGETHER WITH R1, ALKYLENE CONTAINING 2 TO 3 CARBON ATOMS; X REPRESENTS AN ACID ANION; Z1, Z2, Z3 AND Z4 EACH REPRESENTS THE ATOMS TO COMPLETE BENZOTHIAZOLE, NAPHTHOTHIAZOLE, BENZOXAZOLE, NAPHTHOXAZOLE, BENZIMIDAZOLE, NAPHTHIMIDAZOLE OR 3,3DIALKYLINDOLENINE NUCLEI; AND, Q REPRESENTS AN ACIDIC NUCLUES OF THE TYPE USED IN MEROCYANINE DYES. USEFUL CHAIN RIGIDIZED DYES INCLUDE: 5,6 DICHLORO-3-ETHYL-1,8-ETHYLENE-1&#39;&#39;,3&#39;&#39;,3&#39;&#39; -TRIMETHYLBENZIMIDAZOLOINDOCARBOCYANINE IODIDE 5,6-DICHLORO-3,3&#39;&#39;-DIETHYL-1,8-ETHYLENEBENZIMIDAZOLOOXACARBOCYANINE IODIDE 5-(3-1,2-DIHYDROPYRROLO(2,1-B)BENZOTHIAZOLYL)METHYLENE-1-ETHYL-2 -THIOBARBITURIC ACID 5-6-DICHLORO-3,3&#39;&#39;-DIETHYL-1,8-ETHYLENEBENZIMIDAZOLOTHIACARBOCYANINE IODIDE 5,6,5&#39;&#39;,6&#39;&#39;-TETRACHLORO-3,3&#39;&#39;-DIETHYL-1,8,1&#39;&#39;,10 -DIETHYLENEBENZIMIDAZOLOCARBOCYANINE DIODE 3,3&#39;&#39;-IDETHYL-1,10-(2,3-PROPYLENE) NAPHTHO (2,3-D)IMIDAZOLOOXACARBOCYANINE IODIDE 3,3&#39;&#39;-DIETHYL-1,8-ETHYLENEBENZIMIDAZOLOTHIACARBOCYANINE IODIDE 3&#39;&#39;-ETHYL-3,8-ETHYLENE-9-METHYLTHIACARBOCYANINE BROMIDE 3,3&#39;&#39;-DIETHYL-1-10,TRIMETHYLENENAPHTH (2,3-D) IMIDAZOLOOXACARBOCYANINE IODIDE; AND, USEFUL NON-RIDIGIZED MEROCYANINE DYES INCLUDE 4-(1-ETHYL-2(1)-B-NAPHTHOTHIAZOLYLIDENE) ISOPROPYLIDENE)-3-METHYL-1-(PULFOPHENYL)-5-PYRAZOLONE 4-((3-ETHYL-2(3)-BENZOTHIAZOLYLIDENE) ISOPROPYLIENE). 3-METHYL-1-(P-SULFOPHENYL)-5-PYRAZOLONE 4-((3-ETHYL-2(3)-BENZOTHIAZOLYLIDENE) ETHYLIDENE)METHYL-1-(P-SULFOPHENYL)-5-PRAZOLONE.

DEFENSIVE PUBLICATION UNITED STATES PATENT OFFICE Published at the request of the applicant or owner in accordance with the Notice of Dec. 16, 1969, 869 O.G. 687. The

abstracts of Defensive Publication applications are identified by distinctly numbered series and are arranged chronologically. The heading of each abstract indicates the number or pages of specification, including claims and sheets of drawings contained in the application as originally filed. The files of these applications are available to the public for inspection and reproduction may be purchased for 30 cents a sheet.

Defensive Publication applications have not been examined as to the merits of alleged invention. The Patent Ofiice makes no assertion as to the novelty of the disclosed subject matter.

PUBLISHED JANUARY 26, 1971 T882,018 SPECTRAL SENSITIZATION 0F SILVER HALIDE Gary L. Hiller, Hilton, N .Y. (Kodak Park, Rochester, N.Y. 14650) Filed May 14, 1970, Ser. No. 37,302 Int. Cl. G03c 1/28 US. Cl. 96-104 No Drawing. 27 Pages Specification Photographic silver halide emulsions are spectrally sensitized with chain rigidized dyes, such as those having one of the-following formulas:

"Z1-\ I Z2- together with a non-rigidized merocyanine dye, containing a S-pyrazolone nucleus, such as a merocyanine dye of the formula:

wherein n represents 2 or 3; L represents a methine linkage; R represents hydrogen or lower alkyl or aryl; R R R and R each represents alkyl or aryl; R represents hydrogen, lower alkyl, aryl or, taken together with R alkylene containing 2 to 3 carbon atoms; X represents an acid anion; Z Z Z and Z each represents the atoms to complete benzothiazole, naphthothiazole, benzoxazole, naphthoxazole, benzimidazoie, naphthimidazole or 3,3- dialkylindolenine nuclei; and, Q represents an acidic nucleus of the type used in merocyanine dyes. Useful chain rigidized dyes include:

and, useful non-rigidized merocyanine dyes include 4-[ 1-ethyl-2( 1 -fl-naphthothiazolylidene) isopropylidene1-3-methyll- (p-sulfophenyl) -5-pyrazolone 4- 3-ethy1-2 3 -benzothiazolylidene) isopropyliene] 3-methyll- (p-sulfophenyl) -5-pyrazo1one 4- (3 -ethyl-2( 3 -benzothiazolylidene ethylidene] methyl- 1- (p-sulfophenyl -5-pyrazolone. 

